baber/WOPTO huggingface dataset:
Patent GB-706284-A (GB)
Title: Combined thermal and electro-magnetic overload relay
IPC: H01H71/14
Filed: 1952-03-18
Abstract: 706,284. Electromagnetic switches. MAUPAS C. F. E. March 18, 1952 [March 22, 1951], No 7016/52. Class 38(5) A relay responsive to the current in a coil 14 has a main magnetic circuit 1 controlling an armature 4 and an auxiliary parallel magnetic circuit 2, 3 controlling an armature 5, the armatures 4, 5 being mounted on the same spindle 6 and being normally urged into the position shown by a spring 9 and the auxiliary magnetic circuit having a portion of an alloy which loses its magnetic properties at a temperature, say, of 170‹ which is heated by a current proportional to the current in the winding 14. In the form shown diagrammatically, the portions 2, 3 of the auxiliary magnetic circuit near the armature are made of the special alloy, are connected by a conductor 8 and are heated by the current flowing through them, an adjustable shunt 7 regulating the amount of this current. The magnetic force acting on the auxiliary armature 5 together with the force of the spring 9 oppose the magnetic force acting on the main armature 4. A moderate sustained overload causes the portions 2, 3 to lose their magnetism so that the force on the main armature preponderates and the shaft 6 is rotated to open contacts 12 or operate a trip device. A heavy overload causes the force acting on the armature 5 to increase less rapidly than that acting on the armature 4 with consequential actuation of the contacts. In a modification, Figs. 2, 3 (not shown), the current through parts 2, 8 and 3 is derived from a secondary winding energized transformer fashion from the winding 14. A number of mechanisms may also be associated axially so as to drive a common shaft operating the contacts, Fig. 6 (not shown). In Fig. 5, a spindle 54 corresponding to the spindle 6 of Fig. 1 is latched in operated position by a latch 56 and may later be released by an electromagnet 60.
Patent GB-525946-A (GB)
Title: Improvements in circular weaving-looms
IPC: D03D37/00
Filed: 1939-03-03
Abstract: 525,946. Circular loom shedding mechanism. SAINT-FRERES SOC. ANON., and ETABLISSEMENTS ROTATISS. March 3, 1939, No. 7067. Convention date, March 15, 1938. [Classes 142 (i) and 142 (ii)] The warp threads pass through heald eyes 10, Fig. 1, 10a, 10b, 10c, 10d, Fig. 2, guided in fixed vertical guideways 12 and carried by rods 11 secured to slide blocks 17, which are reciprocated on fixed vertical rods 18 by levers 22, 23 pivoted at 24, 25 and operated by cam grooves 27, 28 in a rotating cam 26. The guideways 12 are constituted by sheet metal plates 13 secured to the opposite faces of vertical blades 15 and secured to an annular support 16. The rods 18 are fixed to the loom frame at 20 and to the blades 15. Each slide block may comprise sheet metal members 17a, 17b 17a welded together and a spindle 17d. Each block may operate one, two or more healds. The rods 11, 18 may comprise wires or piano strings. Shunting switches 38, Fig. 5, controlled by springs 40 may be provided, so that after the loom has been stopped, if the cam 26 is rotated reversely (in a direction opposite to the arrow F) the levers are directed into grooves 36 whereby all the warp threads are lowered, and the shuttles made readily accessible for removal &c. The levers may be provided with rolls or rollers.
Patent GB-1062298-A (GB)
Title: Process for the alkylation of phenol
Inventor: BRIGGS ARTHUR STANLEY
IPC: C07C37/14
Filed: 1965-02-19
Abstract: The reaction of phenol with a mixture of isomeric butenes to give 2,6-di-tert.-butylphenol (which may be mixed with 2-tert.-butylphenol), is effected at elevated temperature in presence of an Al phenoxide.  The product may be reacted with phenol in presence of a p-alkylation catalyst to give 4-tert.-butylphenol which is free of sec.-butylphenols; the catalyst is, e.g., H3PO4, H2SO4, oleum, BF3, HCIO4, an ion-exchange resin, an arylsulphonic acid or an acid-activated earth.
Patent GB-176807-A (GB)
Title: Improvements in cushion tyres for motor cars and other vehicles
IPC: B60C7/10
Filed: 1922-03-13
Abstract: 176,807. Maggiora, D. March 14, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Non-metallic elastic bodies and cores.- A continuous or sectional tensioned rubber core C, D, E is seated on a ring F, of increasing hardness towards its base portion. this composite structure being of oval section to fill the inextensible outer cover A. By forming the core of this section, it is stated that the deformation under load (Fig. 3), avoids distension of the cover. Apertures H may be formed in the side walls of the cover to allow air-circulation for cooling purposes in running. In a modification, the tensioned core is completely enclosed by side walls of the ring F.
Patent GB-296138-A (GB)
Title: Improvements in the direct production of caoutchouc by electrophoretic means
IPC: C25D13/22
Filed: 1927-03-16
Abstract: 296,138. Anode Rubber Go., Ltd., (Klein, P.). March 16, 1927. Latex, treating.-In the electrodeposition of rubber &c. from aqueous dispersions, the uniformity of thickness of the deposit is influenced by screens, which may be of insulating or poorly conducting material (hard rubber or celluloid) or may be conductive to form equi-potential surfaces. Blocks of insulating material may be used. The screens may be perforated or cut away. If separate anode and cathode chambers are employed, separated by a diaphragm, the screens are preferably disposed in the cathode chamber. The invention may be practised with the processes of Specifications 223,189*, 245,177. 246,532, 253,069, 254,765, or 257,885.
Patent GB-758756-A (GB)
Title: Improvements in card-index systems
IPC: B42F17/28
Filed: 1954-03-13
Abstract: 758,756. Rotary card filing devices. PARSONS, A. L. March 13, 1954, No. 7377/54. Class 146(1) A card index system comprises a horizontal turntable 7 supporting reference cards 3 and index cards 4, 4a arranged radially, the outer edge of the index cards 4, 4a being thickened to compensate for the additional length of the circumference of the outer wall of the turntable. As shown in Fig 5, each card 4, 4a is provided with an edge strip of card ex- 1 ending above the top edge and then bent downwardly and affixed to the reverse side, the index references lying above the main card. The turntable 7 is mounted in a desk 1 under a top 1a with an arcuate aperture 2 through which the cards 3 can be examined. The turntable 7 comprises top and bottom sections 9, 10 secured by bolts 11 to hardened steel discs 12 pro. vided with ball races 8 for rotation about a spindle 6, and the whole is mounted under the top 1a by a chassis 15 with end angle brackets secured to the side walls of the desk 1. The spindle 6 is secured through the chassis 15 by a nut 16 and lock nut 17, a thrust race 14 being positioned above the chassis 15. The cards 3, 4, 4a are held upright by fixed partitions 13. The main index cards 4 are provided with a single alphabetical reference letter on a wider edge strip than that of the intermediate index cards 4a which may have one or more letters. Reference has been directed by the Comptroller to Specification 719,362.
Patent GB-873455-A (GB)
Title: Process for the preparation of ª+-ketonic carboxylic acids
IPC: C07C59/185
Filed: 1959-03-03
Abstract: e -Ketonic carboxylic acids and salts thereof are prepared by reacting an adipic acid dialkyl ester with an alkali metal by the Dieckmann condensation to form an alkali metal derivative of a 2-ketocyclopentane carboxylic acid ester, reacting this with an acid halide RCOX (where R is an aliphatic branched or unbranched radical which may be substituted, and X is halogen) and reacting the resulting compound with an alkaline saponification agent to effect saponification, ring opening and partial decarboxylation to yield a salt of the desired acid which may then be converted to the free acid.  The Dieckmann condensation is preferably effected in an inert solvent, the alcohol formed being distilled off simultaneously, and the acid halide added to the residue.  The acid halide may contain a functional group which may or may not be protected, e.g. protected hydroxy, protected carboxyl or halogen, or a double bond.  Examples describe the preparation of: (1) 6-ketohexadecenoic - 15 - acid using undecenyl - 10 - oyl chloride; (2) 6-ketononanoic acid using butyric chloride; (3) 8-methyl-6-ketononanoic acid using isovaleric bromide; (4) 6-ketotricosanoic acid using stearoyl chloride; (5) 15-hydroxy-6-ketopentadecanoic acid using 10-acetoxy-decanoyl chloride; (6) 16-hydroxy-6-ketohexadecanoic acid using 11-bromoundecanoyl chloride; and (7) 5-ketotetradecanedicarboxylic acid-1,14 using 9-ethoxycarboxyl-nonanoyl chloride.  The sodium and potassium derivatives of 2-ketocyclopentane carboxylic acid ethyl ester are prepared as intermediates from diethyl adipate by the Dieckmann condensation.  Reference is made to the preparation of penta- and hexa-decanolides by the WolffKisbuer reduction and subsequent lactonisation of 15-hydroxy-6-ketopentadecanoic and 16-hydroxy-6-ketohexadecanoic acids respectively and of cyclopentadecanone by acyloin ring closure and reduction of 5-keto-tetra-decanedicarboxylic acid-1,14.  Specifications 748,801 and 803,120 are referred to.
Patent GB-435689-A (GB)
Title: Improvements in or relating to a syphon pipe assembly for a drier roll
IPC: D21F5/10
Filed: 1935-03-09
Abstract: 435,689. Pipe couplings. BLACKCLAWSON CO., Vine Street, Hamilton, Ohio, U.S.A.-(Assignees of Bridge, A. E.) March 9, 1935, No. 7431. Convention date, March 10, 1934. [Class 99 (i)] [See also Groups XIII and XXVI] In a hinged pipe joint forming part of a syphon device for a drier roll, a horizontal pipe portion and a pipe extension depending therefrom are provided at their adjacent ends with interengaging attachment members the seatings of which are held in substantially fluid-tight connection merely by the weight of the depending pipe portion, the interengaging portions also affording upward movement of the pipe extension into general alignment with the horizontal pipe portion to facilitate extraction of the device through a restricted passage. The joint comprises a member 50 attached to the horizontal pipe 15 and having a spherical seat surface adapted to co-operate with a part-spherical surface on a member 53 which is attached to the depending pipe 16 and has a shoulder 55 normally abutting against a stop 56 on the member 50, as shown in Fig. 6. This stop is preferably part of a part-circular ring 57 secured by screws to the member 50 and extending downwards over two projections 59 provided on the member 53, in order to prevent separation of the members 50 and 53, while affording free swinging movement of the pipe 16, either in a lateral direction, or upwards into alignment with the horizontal pipe 15, as shown in Fig. 7.
Patent GB-1515214-A (GB)
Title: Signal conditioning circuit
IPC: G01S1/50
Filed: 1976-02-25
Abstract: 1515214 Radio navigation SINGER CO 25 Feb 1976 [10 March 1975] 07452/76 Heading H4D Apparatus for determining the time of arrival (TOA) of the 50% leading edge amplitude point of a fixed rise time, pulse-amplitude modulated carrier at the last IF stage of a TACAN receiver utilizes means for counting a fixed number n of cycles of the IF carrier (the technique being based on the fact that there is a fixed number of cycles of IF carrier under the leading edge of the pulse regardless of its amplitude), wherein n is a function of both one-half of the rise time t and of the frequency f As described, for f= 8À5 megacycles per second, t=2À5 microseconds and n=8. The IF signal is fed to the TOA detector 20 and also to a peak detector/sampler circuit 100. The TOA detector 20 comprises comparator sensors 22, 27, an up-down shift register fly-wheel logic 25 and a digital counter and decoder 49. Comparator 22, acting as data generator, is referenced to a slight positive bias voltage just above the noise threshold, whilst comparator 27, the clock generator, is referenced to ground and has its output delayed at 29 by approximately 90 degrees of the carrier so that the clock signal to the remaining circuit occurs when the carrier is close to its instantaneous peak amplitude. So as to reject noise, an up-down shift register 52 and "OR" gate acts as a digital fly-wheel 25, receiving data and clock strobe on terminals 48, 49. The flywheel includes two JK flip-flops, Fig. 3a (not shown). Only if two successive threshold crossings occur does counter 54 begin to count clock pulses. However, once two or more successive threshold crossings are clocked into flywheel 25 it glides past a false dismissal (missing) threshold crossing. Counter 54 counts from zero to 8, at which time decoder 55 outputs a TOA logic signal signifying that the 50% point of an ideally shaped pulse should have reached that level. Other logic signals and commands, assuming an ideally shaped TACAN pulse, are the release of the DUMP command, at count of 8, and entering of the TRACK mode whereby the voltage of a capacitor 133 in the peak detector/sampler circuit 100 follows the peaks of the carrier, a switch from TRACK to HOLD at count 30, the theoretical peak of an ideal TACAN pulse, a check if the pulse disappears between counts 32 and 48 (valid pulse) and the output of a valid pulse signal at count 48. Also at count 48 there is a start A/D conversion command. Decoder 55 includes a memory with flip-flops such that they are set at the various commands. At the end of the A/D process, the counter-decoder 49 is reset and the next valid signal is awaited. Capacitor 133 has a fixed amount of rate limiting for noise immunity. The sampled pulse peak detector 100 thus measures the magnitude of the IF signal and stores it for applying to A/D converter 30 for the subsequent processing. The circuitry of detector/sampler 100 is described in detail, Fig. 4 (not shown).
Patent GB-456707-A (GB)
Title: Improvements in laundry ironing machines
IPC: D06F69/04
Filed: 1936-03-12
Abstract: 456,707. Ironing-machines. KNOTT, J. S., 19, St. Agnes Place, Kennington, London. March 12, 1936, No. 7475. [Class 138 (ii)] A laundry ironing-machine of the kind comprising a stand on which is mounted a reciprocating or oscillating platen and an iron suspended above the platen which is brought down to treat the front of a shirt lying on the platen, is provided with means for varying the length of stroke of the platen and for simultaneously adjusting, in the one operation, the position of a neck-band engaging device relatively to the iron to accommodate itself to the stroke of the platen. In the embodiment shown in Figs. 1, 2, the support 7 of the platen 8 is oscillated about a shaft 6 by a pin 19 on a rod 18 engaging in a slot 20, the rod being reciprocated by a crank disc 17 driven through worm gearing 13, 14 and a clutch 12 by a shaft 10 provided with a driving pulley 11. The neck-band engaging device 26 is supported on an arm 27 mounted on a carrier 25 which is pivoted on the shaft 6 and provided with a slot 28 engaged by the pin 19. When adjustment of the stroke of the platen is effected by moving the pin 19 along the slot 20, the movement of this pin along the slot 28 simultaneously adjusts the position of the carrier 25 and hence the member 26. The iron 29 is resiliently mounted on a lever 30 connected to an adjustable rod 31 provided with a roller 35 for engagement with a treadle 38 by means of which the iron is retained in its working position. The lever 30 may be cammed at 1 so that movement of the iron towards the platen depresses a rod 2 which, through suitable connections, throws in tho clutch 12.
Patent GB-609526-A (GB)
Title: An improved method and apparatus for forming the seams in fluid containers
IPC: B31B50/66
Filed: 1946-03-11
Abstract: 609,526. Seaming non-metallic materials. SIMPSON. A. E., SCHOFIELD, P. J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 11, 1946, No. 7492. [Class 42(i)] [Also in Group XI] Seams are formed in fluid containers comprising an envelope of impervious non- metallic sheet material, by mounting the assembled parts on a collapsable destructible, or otherwise removable jig, and subjecting the portions to be seamed to dielectric heating by high frequency alternating currents between two electrodes, one comprising an electrically conducting flexible continuous band, mounted on rollers or the like and adapted to make continuous contact with the outside of the container, and the other comprising a metallic strip secured to or positioned on the'jig and in juxtaposition to the material on the interior of the container. The external electrode assembly may be pivotally mounted at the end of a pivoted and counterbalanced arm, and the container may be mounted on a trolley running freely on rails beneath it. The flexible electrode consists of a continuous band 7 of thin copper strip secured to a rubber belt 8 running over rollers 9 and 10, the roller 9 being driven from a motor 13 through a transmission including belt drive 14 and sprocket chain drive 15. The idle roller 10 is mounted on a pivoted arm 16 which is spring-loaded by a spring 17 and the band 7 is connected to the high frequency supply through a roller 18 mounted on a spring-loaded arm 20. An automatic cut-out is provided to cut off the supply when the motor 13 ceases to run. The adhesive to form the bond may be provided by the wall of the container, where this consists of fluid-resistant material or a fabric coated on both sides therewith; or an additional layer of such material may be interposed between overlapping edges. The fabric may be proofed with a thermoplastic material such as the polyvinyl acetal described in Specification 575,477, or a partly cured thermohardening material. Or, the overlapping edges may be joined by a hotcuring cement. Specifications 599,023 and 573,518 also are referred to.
Patent GB-1390903-A (GB)
Title: Thermostat-regulated radiator valve for single or double conduit central heating systems
Inventor: CHRISTIANSSON O F C
IPC: G05D23/13
Filed: 1974-02-19
Abstract: 1390903 Central heating systems FINGAL CHRISTIANSSON INGENIORSBYRA 19 Feb 1974 [19 Feb 1973] 7502/74 Heading F4U [Also in Division F2] The flow through a central heating radiator 1 is controlled by a valve comprising a U-shaped bimetallic element 7 having legs 8, 9 bearing at their free ends 10, 11 on a resilient tube 6 so as to restrict the flow of heating liquid through the latter with increase in temperature of the liquid leaving the radiator and vice versa. When the valve is applied to a single conduit circulation system, shown, all the heating liquid entering radiator 1 flows through the resilient tube 6 and the return flow passes through a concentric duct surrounding the tube and containing bimetallic element 7, before leaving through a branch 5. The loading on bimetallic element 7 can be adjusted by a knob controlled screw 16 bearing on a projection 17 from leg 8. A further projection 18 from leg 9 engages the valve housing 2. Tube 6 and bimetallic element 7 are supported by a washer 14 which also serves as a baffle to direct some of the heating liquid entering through duct 4 directly to outlet branch 5. When the valve is applied to a double conduit system (Fig. 2, not shown), branch 5 is blanked-off by a screwed plug (23) having a spherically concave inner end surface engaging washer 14. In this case the return flow passes through resilient tube 6 before leaving via duct 4.
Patent GB-164512-A (GB)
Title: Improvements in cooling exhaust valves of internal combustion engines
IPC: F01L3/14
Filed: 1920-03-13
Abstract: 164,512. Crossley, Sir K. I., and Webb, W. le P. March 13, 1920. Temperature, regulating.-A beat exhaust valve A for an internalcombustion engine is formed with a hollow stem E (and if desired a hollow head) in which is placed a core G of aluminium or other solid substance or alloy of high heat conductivity. The core transfers heat from the head of the valve to the stem, which works in a guide cooled by air, or by water or other liquid in the jacket C.
Patent GB-1057297-A (GB)
Title: Process for the manufacture of composite structures from rayon textile materials and copolymers of mono-olefines
IPC: C08J5/06
Filed: 1964-02-24
Abstract: In the manufacture of rubber articles from saturated amorphous copolymers of ethane and propene or butene (1) satisfactory adhesion of the rayon cord threads or fabrics used for reinforcement is obtained by a process comprising (1) impregnating the rayon cord thread or fabric with an aqueous dispersion containing (a) a reactive di- or polymethylol phenol resin obtained from a phenol and formaldehyde and (b) a partially unsaturated amorphous copolymer optained by reacting a copolymer of ethene and propene or butene (1) with an N-bromodicarboxylic acid imide, e.g. N-bromo-succinimide, or an N-bromo-carboxylic acid amide, (2) embedding the impregnated materials after drying in a vulcanizable mixture of a partially unsaturated amorphous copolymer of the kind described under (1) (b) which also contains sulphur and accelerators, (3) applying to the composite structure a vulcanisable mixture of the saturated amorphous copolymer of ethene and propene or butene-(1) and at least one peroxide, e.g. dicumyl peroxide or tert, butyl cumyl, peroxide, and sulphur to bring about cross-linking and (4) vulcanizing the composite-structure while imparting to it a final shape.  The mixture of the partially unsaturated amorphous copolymer used in step (2) of the process may also contain active or inactive fillers, process oils, pigments and tackifiers.  Suitable vulcanization accelerators are zinc dimethyl dithiocarbaminate, 2-mercapto benzothiazole, N-cyclohexyl-2-benzothiazyl sulphene amide, tetramethyl thiuram mono- or di-sulphide, di-phenyl guanidine, morpholine or morpholine disulphide.  The di or polymethylol phenol resin may be made from phenol, an alkyl phenol, pyrogallol or resorcinol and may be added as the resin precondensate or formed in situ.
Patent GB-453829-A (GB)
Title: Improvements in and relating to electric heating elements
IPC: H01B7/16
Filed: 1935-12-30
Abstract: 453,829. Electric resistance heating elements. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and RYCROFT, J. L., c/o General Electric Co., Ltd., Wembley, Middlesex. Dec. 30, 1935, No. 7682. Addition to 436,405, [Group XXXVI]. [Class 39 (iii)] In making a heating element according to the parent Specification the sheath 1, containing the wire 3 and insulating material 2, is made of an expansively reactive metal and the casing 4 is made of a relatively unreactive metal. Iron or aluminium and nickel-chromium respectively are suitable materials. The expansion of the sheath is effected by oxidation or chlorination thereof. Oxidation is effected by forcing steam or air through the outer casing, or occurs during the first use of the element due to the outer casing not being sealed. Specifications 259,610, [Class 37], and 431,453, [Group XXXVI], are referred to.